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低效林的大面积产生严重阻碍了林业的可持续发展。文中介绍了低效林的概念,分析了自然因素、人为干扰等导致低效林形成的主要原因,将低效林划分为低效防护林和低质低产林,提出一系列低效林评判标准,讨论了补植补播、调整改造、封育改造、效应带改造等主要的低效林改造方法,最后指出低效林改造过程中需要注意的一些问题。
The large-scale production of inefficient forests has seriously hindered the sustainable development of forestry. The paper introduces the concept of inefficient forest, analyzes the main causes of the formation of inefficient forest due to natural factors and man-made disturbance, classifies inefficient forest into low efficiency and low quality shelterbelts, puts forward a series of evaluation criteria for low efficiency forest, The main methods to rebuild inefficient forests such as replanting, adjusting, sealing and reformation, and effect belt transformation were discussed. Finally, some problems needing attention in the process of rebuilding inefficient forests were pointed out.